﻿// Copyright 2020 The Tilt Brush Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

using UnityEngine;

namespace TiltBrush
{

    public class ControllerActivationEffectScript : MonoBehaviour
    {
        private float m_Time;
        public float m_Duration;
        private Renderer m_Renderer;

        // Use this for initialization
        void Start()
        {
            m_Renderer = GetComponentInChildren<Renderer>();
        }

        // Update is called once per frame
        void Update()
        {
            m_Time += Time.deltaTime;
            float intensity = Mathf.Sin((m_Time / m_Duration) * Mathf.PI);
            if (m_Renderer != null)
            {
                m_Renderer.material.SetFloat("_Intensity", intensity);
            }
            if (m_Time > m_Duration)
            {
                Destroy(gameObject);
            }
        }
    }
} // namespace TiltBrush
